Thomas pitkin russell



Patented Aug. 9, 1898. T. P. RUSSELL.

nu. 608,7l7.

BoLT. (Application. lad. Jam 28 1898..)

(No Model.)

tlniirgnn SteineA Farrar miren?.

THOMAS PITKIN RUSSELL, OF MARQUAND, MISSOURI.

BOLT.

SPECIFICATION formngfpart of Letters Patent No. 608,717, dated August 9, 1898. Application led January 28, 1893. Serial No. 663,348. (No model.)

To crZZ whom t may concern.-

Be it known that I, THOMAS PITKIN RussELL, a citizen of the United States, residing at' Marquand, county of Madison, Missouri, have invented a certain new Improvement in Bolts, of which the following is a specification.

My invention relates generally to bolts, and specifically to that class of bolts having an automatically-actuated locking-key` for securing the bolt against accidental displacement.

In the accompanying drawings, Figure l is a vieW in elevation of my improved bolt. Fig. 2 is a plan of the same. Fig. 3 is a similar View with the key in locking position. Fig. 4 is an edge view of the key. Fig. 5 is a side elevation of the key.

Referring to the drawings, O represents the ordinary bolt, in the lower end of the body section of which I cut a mortise D. In the mortise I pivotally secure the tang F of a locking-key the outer end of which is enlarged to form a head B, which is preferably of the exact size and shape of the bolt, the junction of the head with the tang forming shoulders Z, for a purpose hereinafter described. The

pivotpin A for securing the key in the mor! tise of the bolt passes through a longitudinal slot E in the tang, thus permitting an independent longitudinal movement of lthel key essential to its successful operation.

In constructing the locking-key I make the tang F somewhat shorter than the side walls of mortise D, so that When the shoulders Z of the key are in contact with the ends of the mortisewalls the inner end of the tang will be free of contact With any portion of the bolt, for a purpose hereinafter described.

Vhen my improved bolt is passed through the openings in the parts which it is desired to secure, the locking-key will, through the heavy head B, drop into the position shown in Fig. 3, securing the bolt against accidental withdrawal. Vhen it is desired to with draw the bolt, the key is turned up to its normal position, when the bolt may be withdrawn, it being understood that slot E in the tang is of such size and so situated that it will permit the necessary movement of the key in order to allow shoulders Z to clear the ends of the mortise-Walls in dropping to locking position.

I/Vhen the bolt has been in position for some time, especially in outdoor service, it will become necessary to drive the bolt out, the force being applied to head B. By constructing the key so Vthat the shoulders Z only will contact with the bolt I am enabled to drive on the key with sufficient force to unseat the bolt Without danger of springing or breaking the tang F or the pivot-pin `/,it being understood that slot E is of such length that its ends Will not contact with the pivot-pin When the key is in normal position.

I am aware that bolts having headed locking-keys are not new 5 but I am not aware that any having the advantage of fully protecting the tang of the key and the pivotpin from injury when using force to unseat the bolt has been heretofore constructed.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

A bolt formed with a mortise at one end, in combination With a locking-key having a tang and a head on the outer end of the tang, the tang being pivotally secured in the mortise by a pivot-pin passed through a slot in the tang, and the head being adapted to bear normally against the ends of the mortise- Walls, the tang being shorter than the Walls of the mortise, and the slot in the tang being of such length that its ends will not contact with the pivot-pin in the normal position of the key, substantially as described.

THOMAS PITKIN RUSSELL.

IVitnesses:

E. A. MURRY, y A. S. RUSSELL. 

